[13.0][IMP] delivery_cttexpress: configurable label delay

[chienandalu]

fw of #735

When we recod a shipping in the CTT Express backend the label API could not be ready in the moment to retrieve the labels. As CTT Express stated, a little delay would add the needed time for the API to be ready.

cc @Tecnativa TT46443

please review @pedrobaeza @victoralmau

[github-actions]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days.
If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.

[dreispt]

@chienandalu Can you rebase to fix pre-commit, please?

[chienandalu]

Done @dreispt

[OCA-git-bot]

This PR has the approved label and has been created more than 5 days ago. It should therefore be ready to merge by a maintainer (or a PSC member if the concerned addon has no declared maintainer). 🤖

[pedrobaeza]

/ocabot merge minor

[OCA-git-bot]

Hey, thanks for contributing! Proceeding to merge this for you.
Prepared branch 13.0-ocabot-merge-pr-737-by-pedrobaeza-bump-minor, awaiting test results.

[OCA-git-bot]

@pedrobaeza your merge command was aborted due to failed check(s), which you can inspect on this commit of 13.0-ocabot-merge-pr-737-by-pedrobaeza-bump-minor.

After fixing the problem, you can re-issue a merge command. Please refrain from merging manually as it will most probably make the target branch red.

[pedrobaeza]

/ocabot merge minor

[OCA-git-bot]

Hey, thanks for contributing! Proceeding to merge this for you.
Prepared branch 13.0-ocabot-merge-pr-737-by-pedrobaeza-bump-minor, awaiting test results.

[OCA-git-bot]

Congratulations, your PR was merged at cbf5ebc. Thanks a lot for contributing to OCA. ❤️